Brine-evaporator.



PATENTED JAN. 20, 1903.

O. SACHSB. BRINE EVAPORATOR.

APPLICATION FILED FEB. 1. 1902.

2 SHEETSSHEET 1.

N0 MODEL,

WWW

No. 718,798. PATENTED JAN. 20, 1903. O. SACHSE. BRINE BVAPORATOR.

APPLICATION FILED FEB. 1, 1902.

N0 MODEL. 2 SHEETS-SHEET 2 /virtueooef I m M 7 WW as, g

THE pmams PETERS cc, vnofo-umm wAsMms'ruN. u. c.

UNTTED STATES PATENT OFFICE.

OTTO SACHSE, OF LUNEBURG, GERMANY.

BRlNE-EVAPORATOR.

SPECIFICATION forming part of Letters Patent No. 718,798, dated January20, 1903.

Application filed February 1, 1902; Serial No. 92,117. (No model.)

To all whom it may concern:

Be it known that I, OTTO SACHSE, director of the salt-works ofLiineburg, residing at Liineburg, Germany, have invented certain new anduseful Improvements in or Relating to Brine-Evaporators, of which thefollowing is a specification.

This invention relates particularly to continuouslyoperating upright-tnbe brine-evaporators, its object being to obviate the drawback whichattends existing apparatus of this class-via, the rapid clogging of thetubes by salt deposits. This object is accomplished by the arrangementof agitating mechanism above the tube-orifices, at which the salt isthereby prevented from collecting. By thus hindering the salt fromsettling at the upper orifices of the tubes the tubes are protected fromobstruction throughout their full length by reason of the fact observedby me that the clogging of the tubes begins at the upper tube ends andgradually extends downward, and inasmuch as the accumulation of salt ispromoted by the presence at the upper holds them, care is takenin'accordance with of agitating mechanism, with the object of protectingthe upper tube-orifices from obstruction, is that the extra laborhitherto necessitated by the formation of the salt deposits on thetube-walls, which had to be detached and removed at frequent intervalsby sending water, steam, dilute brine, 850., through the tubes, togetherwith various inconveniences attachingto that operation, is avoided.

The form of agitating mechanism which is preferred is what may bedescribed as a trailing agitating device-t. 6., a device from therevolving armor arms of which are suspended a number of chains, whichmay be weighted with balls or other similar heavy bodies and which is soarranged that all the upper tube ends are subjected to the combinedknocking and jumping action which is exercised by the device thusconstructed when in motion. For the chains other equivalent trailingbodies may of course be substituted, if desired.

Experiments have shown that an evaporating apparatus is highlyserviceable for the purpose which has an upright tubular body the tubesof which do not extend with their upper ends over the upper surface ofthe tubeholding plate and which apparatus is furthermore provided with atrailing agitator adapted to complete about six revolutions per minuteand capable of turning either to the left or to the right. The agitatoris placed about one meter above the tube-plate and provided with asomewhat large number of depending chains made up of links of mediumsize. WVith apparatus such as this operations have been conducted formonths together without the least interruption. It goes without sayingthat the brine which was used for the experiment had previously beenfreed from salts (such as gypsum or the like) having the property offorming crusts or scales.

One form of the novel apparatus carried out in accordance with thisinvention is shown by way of illustration in the accompanying drawings,in which- Figure 1 is a vertical section on line A B, Fig. 2; and Fig. 2is a plan of a tubular apparatus, representing, partly in section, aball trailing agitator arranged above the upper tube-plate. Fig. 3 showsa vertical sectional view of a complete evaporating apparatus inaccordance with this invention.

The upper tube-plate of the tubular apparatus is designated by theletter a. It supports the vertical tubes 6, arranged in concentriccircles and so secured in the tubeplate that their ends do not protrudeabove the top surface of the tube-plate. Over this top surface of thetube-plate a ball trailing agitator is arranged. It consists of arevolving shaft 0, which carries an arm d. To the arm (1 chains 2 areattached, and from the chains balls f, resting upon the tube-plate, aresuspended.

The operation of the mechanism is as follows: Shaft c is rotated by thedriving-gear o.

By this rotary motion is imparted to the arm 01, which in turning takesthe trailing arrangements of chains 6 and balls f around with it, theballs and chains dragging behind. The hallsfon being thus set in motiondescribe circles and as they do so enter the tube-orifices which theyencounter in their circular course, thereby keeping them free from anysalt deposits. Besides this the operation of the apparatus is as usual.Brine is introduced through pipe g. The deposited salt, together with asmall portion of brine, is carried out through valve it into a filter i,Where it is separated from the brine. The brine is let out through pipe76. The vapor is discharged through pipe Z. Heatingsteam is introducedthrough pipe m. Condensed water is discharged through pipe "n.

\Vhile I have described and shown a chainand-ball trailing device, I mayemploy other forms of agitating devices adapted to sweep over the upperorifices of the tubes without departing from my invention.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a brine-evaporator, the combination of areceptacle with brine-feeding and vapordischarging devices, ,asteam-chamber, upright tubes in said steam-chamber fixed in tube-platesand communicating with said receptacle, and an agitating device arrangedabove the upper tube-plate and movable to sweep over the upper orificesof said tubes.

2. In a brine-evaporator, the combination of areceptacle withbrine-feeding and vapordischarging devices, a steam-chamber, uprighttubes in said steam-chamber fixed in tube-plates and communicating withsaid receptacle, and a trailing agitator rotatably mounted above theupper tube-plate with trailing bodies adapted to sweep over the uppertube-orifices.

3. In a brine-evaporator, the combination of a receptacle with brinefeeding and discharging devices, a steam-chamber, upright tubes in saidsteam-chamber fixed in tubeplates and communicating with saidreceptacle, rotatably-mounted arms above the upper tube-plate, chainsfixed to said arms and provided with heavy bodies at their free ends,said heavy bodies adapted to sweep over the upper orifices of the tubes.

Signed this 17th day of January, 1902, at Ham bu rg.

OTTO SACIISE.

\Vitnesses:

OTTO W. HELLMRICH, IDA CHRIST. HAFERMANN.

